A coupled immersed boundary method and isogeometric shell analysis for fluid-structure interaction of flexible and lightweight shells in high-Reynolds number flows

被引:2
作者
Yan, Keye [1 ,2 ,3 ,4 ]
Wu, Yue [1 ,2 ,3 ]
Zhu, Qiming [1 ,2 ,3 ]
Khoo, Cheong [4 ]
机构
[1] Harbin Inst Technol, Minist Educ, Key Lab Struct Dynam Behav & Control, Harbin 150090, Peoples R China
[2] Harbin Inst Technol, Minist Ind & Informat Technol, Key Lab Smart Prevent & Mitigat Civil Engn Disaste, Harbin 150090, Peoples R China
[3] Harbin Inst Technol, Sch Civil Engn, Harbin 150090, Peoples R China
[4] Natl Univ Singapore, Dept Mech Engn, Singapore 117575, Singapore
基金
中国国家自然科学基金;
关键词
Fluid-structure interaction; Immersed boundary method; High-Reynolds number flows; Isogeometric analysis; Wall modeling; LARGE-EDDY SIMULATION; NUMERICAL DISSIPATION; INCOMPRESSIBLE FLOWS; LARGE DEFORMATIONS; HEART-VALVES; MEMBRANE; MASS; ALGORITHMS; FRAMEWORK; DYNAMICS;
D O I
10.1016/j.cma.2025.117898
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This study presents an efficient numerical framework for simulating fluid-structure interactions (FSIs) involving flexible, lightweight shells subjected to high-Reynolds-number flows. By combining the immersed boundary method (IBM) and isogeometric analysis (IGA), the framework incorporates three major innovations: (1) a wall-modeling, direct-forcing, diffused-interface IBM tailored for FSI simulations with high-Reynolds-number turbulent flows, employing non- equilibrium explicit wall functions; (2) integration of the interface quasi-Newton inverse least-squares (IQN-ILS) method into the IBM/IGA framework to enhance the accuracy and efficiency of iterative Gauss-Seidel coupling in strongly coupled FSI scenarios; and (3) high-order solvers for both fluid and structural domains, featuring a sixth-order compact finite difference method (FDM) for fluid dynamics and isogeometric shell formulations for structural analysis. The framework is validated through four numerical test cases, including simulations of a hinged flag, an inverted flag, a membrane airfoil, and an air-supported membrane structure. The results demonstrate good agreement with reference data, showing the framework's efficiency, accuracy, and applicability for solving large-scale shell-related FSI problems across diverse engineering and scientific domains.
引用
收藏
页数:27
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